A shortened term which came about in the late 80s but stands for progressive rock music which dates back to the late 60s. It is rock based music that pushed boundaries beyond pop 'single' verse, chorus, verse, bridge, chorus, four minute compositions.

Prog encompasses various styles dating back to the late 60s depending on influences and established music forms being blended together. Classical blended with rock is a style of prog called 'symphonic'. Jazz musicians that composed rock suites are called 'fusion' in the U.S.. In the U.K. jazz and rock combine in the style called 'canterbury'. In France it's called 'zuehl'. Freakout, jam style bands in Germany are called 'krautrock'; elsewhere they are called 'spacerock' and 'jambands'. Bands whos sound is dominated by synthesizers as both rhythm and lead instruments are called 'electronic'. There are many progressive style rock artists who are unclassifiable, who pushed the boundaries of rock in the late 60s and early 70s in completely unique ways such as Funkadelic, Frank Zappa and the early Santana band.

Prog is a nebulous term applied to artists who play rock instrumentation without regard to commercial, pop radio format restraints of song length and/or improvisational content.

Short for 'Proggressive rock'. A kind of music, usually typified by very long songs with complex structures and time signatures. It started with bands like Pink Floyd, King Crimson, Yes, etc, and bands like Dream Theatre, Opeth, The Mars Volta and Tool all have strong prog influences, making the old prog stereotype of a middle-aged bearded man in a wizard outfit tediously wanking off his guitar pretty much redundant.

1. An adjective denoting the complexity of a thing or event; when something seems far too difficult to undertake or complete; when one is involved in a "sticky situation." (Derives from the words "Progressive" and "Prog", used to describe certain types of rock/Metal music (e.g., Rush, Dream Theater, Genesis, Symphony X, Tool, etc.), which may use odd time-signatures and, at times, contain mind-blowing musicianship.)

2. My also refer to the manner in which one is dressed: One will usually sport a white button-down shirt and tight-fit pants (black jeans, leather, blue jeans, white pants).

"My Advanced Quantam Physics exam was so prog that my heart almost stopped as I was trying to complete it."

"Did you see John Paul at the party yesterday? He was proggin' it up with his clean-ass white Calvin Klein button-down. He dressed mad prog."